Definitions [4]
Define “zero order reaction”.
Zero order reaction is the reaction whose rate is independent of the reactant concentration and remains constant throughout the course of the reaction.
Define the following term:
Pseudo first-order reaction
The reactions that have higher order true rate law but are found to behave as first order are called pseudo first order reactions.
\[\ce{CH3COOCH3 + H2O - CH3COOH + CH3OH}\]
Define half life of a reaction.
Half life of a reaction is defined as the time required for the reactant concentration to reach one half of its initial value.
Define activation energy.
Activation energy is the lowest energy necessary to commence a chemical reaction by disrupting the bonds of reactant molecules and creating the activated complex or transition state. It signifies the energy threshold that must be surmounted for a reaction to transpire. Activation energy is typically represented as Ea.
Activation energy may be defined as the excess energy that the reactant molecules (having energy less than the threshold energy) must acquire in order to cross the energy barrier and to change into the products.
Important Questions [24]
- How Does It Differ from Roasting ?
- Write Resonating Structures of Ozone
- The decomposition of N2O5(g) at 320K according to the following equation follows first order reaction
- What is Pseudo First Order Reaction? Give One· Example of It.
- Define “zero order reaction”.
- Write molecularity of the followiug reaction: 2NO(g)+O2(g)→2NO2(g)
- In a first order reaction x → y, 40% of the given sample of compound remains unreacted in 45 minutes. Calculate rate constant of the reaction.
- A → B is a first order reaction with rate 6.6 × 10-5m-s-1. When [A] is 0.6m, rate constant of the reaction is
- Sucrose decomposes in acid solution to give glucose and fructose according to the first order rate law. The half life of the reaction is 3 hours. Calculate fraction of sucrose which will remain after 8 hours
- The Unit of Rate Constant for Zero Order Reaction is
- Which Among the Following Reactions is an Example of a Zero Order Reaction?
- Derive the Relation Between Half Life and Rate Constant for a First Order Reaction
- The Integrated Rate Equation for First Order Reaction is a → Products
- The Half-life Period of Zero Order Reaction A → Product is Given by
- The Half Life Period of a First Order Reaction is . Calculate the Rate Constant
- In a First-order Reaction a → Product, 80% of the Given Sample of Compound Decomposes in 40 Min. What is the Half-life Period of the Reaction?
- The Rate Constant for a First Order Reaction is 100 S–1. the Time Required for Completion of 50% of Reaction is
- The Arrhenius Equation is
- In the Arrhenius equation for a first order reaction, the values of ‘A’ of ‘Ea’ are 4 × 1013 sec−1 and 98.6 kJ mol−1 respectively. At what temperature will its half life period be 10 minutes?
- What are the values of the following at the same time?
- Explain a graphical method to determine activation energy of a reaction
- The Rate Constant of a First Order Reaction Are 0.58 S-1 at 313 K and 0.045 S-1 at 293 K. What is the Energy of Activation for the Reaction?
- Define activation energy.
- Calculate Activation Energy for a Reaction of Which Rate Constant Becomes Four Times When Temperature Changes from 30 °C to 50 °C
